Year	% (cumulative)
1973	6.14659023284912
2001	14.0932540893555
2002	14.7901201248169
2003	14.7547044754028
2004	15.4792156219482
2005	15.9075841903687
2006	15.9846239089966
2007	17.8352909088135
2008	20.5263805389404
2009	20.7235298156738
2010	19.8782596588135
2011	20.2837791442871
2012	20.7389297485352
2014	23.4009094238281
2015	21.1577701568604
2016	20.3846302032471
2018	20.8695793151855
2020	21.1532306671143